This seemed straightforward, and it was, more or less.

I converted 1gm of DMT freebase into its fumarate, using the required acetone and fumaric acid.

The DMT fumarate precipitated nicely - beautiful white needle crystals appeared!

I left it overnight to evaporate in a dry, dark location.

While Hoping to see crystals, I was not surprised the next day when there was a puddle of clear gel in the pyrex dish.

I know now that patience is a must in chemistry, and left the dish to dry a while.

Quite a while actually. I forgot about it!

Checking on it a month+ later, I noticed it had indeed crystallized into yellow shards.

I chopped the shards into smaller pieces for storage, but I think it was a success.

Of course they must be sampled to know for certain...

The yield was 1gm, due to some of the material not crystallizing.

he

You should end up with 1,3 grams more or less so where did the rest go ?

Did you vaporize the rest of the solvent?

Also you can dry fumarates in a oven 100c for an our or so and it will become very dry and crispy

Did you use anhydrous acetone?

That might explain the losses and lengthy drying time.

I lost some of the material due to incomplete crystalization.

I assume the acetone was anyhydrous (via anhydrous magnesium sufate/acetone per FASA tek). No doubt the high humidity here makes it difficult for it to remain 100% anhydrous.

Maybe next time I will try an oven to assist in dry time, thanks

I will report my tests on the material sometime soon